The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2025
Filed:
Feb. 06, 2023
Safran Aircraft Engines, Paris, FR;
Didier René André Escure, Moissy-Cramayel, FR;
Romuald Gentils, Moissy-Cramayel, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Abstract
A method for controlling a gas turbine engine including estimating a temperature gradient between first and second portions of a spool, comparing the estimated temperature gradient with a temperature gradient threshold, if the temperature gradient is less than the threshold, driving a drive shaft in rotation at a rotational speed varying over time according to a first profile of rotational speed variation, and if the temperature gradient is greater than the threshold, controlling the electric motor to drive the drive shaft in rotation such as to vary the rotational speed of the drive-shaft according to a second profile of rotational speed variation over time so that, when the rotational speed lies within a critical interval of rotational speeds, acceleration of rotation of the drive shaft is greater than acceleration of rotation of the drive-shaft according to the first profile of rotational speed variation, within the same critical interval.